63 lines
1.5 KiB
Rust
63 lines
1.5 KiB
Rust
use crate::schema::{category};
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use crate::schema::category::dsl::*;
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use super::*;
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#[derive(Queryable, Identifiable, PartialEq, Debug, Serialize, Deserialize)]
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#[table_name="category"]
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pub struct Category {
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pub id: i32,
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pub name: String
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}
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#[derive(Insertable, AsChangeset, Clone, Serialize, Deserialize)]
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#[table_name="category"]
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pub struct CategoryForm {
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pub name: String,
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}
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impl Crud<CategoryForm> for Category {
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fn read(conn: &PgConnection, category_id: i32) -> Result<Self, Error> {
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category.find(category_id)
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.first::<Self>(conn)
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}
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fn delete(conn: &PgConnection, category_id: i32) -> Result<usize, Error> {
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diesel::delete(category.find(category_id))
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.execute(conn)
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}
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fn create(conn: &PgConnection, new_category: &CategoryForm) -> Result<Self, Error> {
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insert_into(category)
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.values(new_category)
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.get_result::<Self>(conn)
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}
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fn update(conn: &PgConnection, category_id: i32, new_category: &CategoryForm) -> Result<Self, Error> {
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diesel::update(category.find(category_id))
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.set(new_category)
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.get_result::<Self>(conn)
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}
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}
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impl Category {
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pub fn list_all(conn: &PgConnection) -> Result<Vec<Self>, Error> {
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category.load::<Self>(conn)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_crud() {
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let conn = establish_connection();
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let categories = Category::list_all(&conn).unwrap();
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let expected_first_category = Category {
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id: 1,
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name: "Discussion".into()
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};
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assert_eq!(expected_first_category, categories[0]);
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}
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}
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